Question

The Koran, the holy book of the religion of Islam, __________.
a. was written by Muhammad
b. has been amended by later religious leaders
c. is a collection of recollections of the teachings of Muhammad
d. includes the Old and the New Testament of the Bible

Answer 1

The Koran has never been amended and is not based on the Bible, which has been amended many times. So that rules out B and D.

The Koran was revealed from Allah (god) to Muhammad. Muhammad s.a.w did not write the Koran. So A is gone.

C would be the closest best answers.